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OCZ ZS Series 750W Power Supply Review

Manufacturer: OCZ Technology

Introduction and Features

OCZ recently introduced the ZS Series power supplies, which are targeted towards value-oriented gaming systems. The ZS Series complements OCZ's High Performance and Max Performance power supplies and provides an affordable entry point for PC enthusiasts on a budget who still want good efficiency along with NVIDIA SLI or ATI CrossFire support.

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 The new ZS-Series currently includes three different power supplies ranging in output capacity from 550W up to 750W. The ZS-750 we have up for review today features 750W of continuous output power, is 80 Plus Bronze certified and incorporates all hard-wired cables with four PCI-E connectors. The OCZ ZS Series 750W PSU is currently selling for $84.99 USD (October 2011).

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Continue reading our review of the OCZ ZS Series 750 watt power supply!

Here is what OCZ has to say about their ZS Series PSUs:

Excellent Value for Performance… The OCZ ZS Series PSU is an excellent solution for today's value-oriented gaming systems, and can power both NVIDIA SLI and ATI CrossFire modes with an array of connectors. With the ideal combination of stability and sleek design, ZS is designed with gamers and modders in mind, sporting a compact form factor for compatibility with a range of case designs. Available in configurations ranging from 550W to 750W and backed with OCZ's 3-year Power Swap warranty, the ZS Series PSU gives you peace of mind to ensure stability, low noise, and efficiency of your home gaming system.

OCZ ZS-750 PSU Key Features:

• 750W continuous power output at 40°C
• 80 Plus Bronze Certified (85% efficiency at typical load)
• Single +12V output (54A/648W)
• Quiet 135mm double ball bearing fan, load controlled speed
• ATX12V version 2.2 compliant
• Active PFC with Universal AC line input
• Non-modular cabling system
• Four PCI-E connectors: support NVIDIA SLI and ATI CrossFire
• Protection: Over Current, Over Voltage, Under Voltage and Short Circuit
• Safety Approvals: UL, CUL, CE, CB, FCC Class B, TUV, CCC, C-tick
• 3-Year Power Swap warranty

Testing Methodology

Establishing an accurate load is critical to testing and evaluating a PC power supply. PCPerspective’s power supply test bench can place a precise 2,000 watt DC load on the PSU under test. Each power supply we review is tested under controlled, real-world conditions up to its maximum rated load (at 40ºC), using both 115 VAC and 240 VAC line voltage. Our current suite of tests includes:

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• DC Load Regulation
• DC Line Regulation
• DC Cross-load (unbalanced load)
• AC Ripple and Noise
• Power Factor
• Efficiency
• Differential Temperature
• Noise

The OCZ ZS-750 power supply was evaluated on both features and performance. A full range of equipment was used to test the power supply under controlled load conditions.

• (2) CSI3710A Programmable DC load (+3.3V and +5V outputs)
• (4) CSI3711A Programmable DC load (+12V1, +12V2, +12V3, and +12V4)
• (2) 200W Precision resistor load bank (+12V5 and +12V6)
• Switchable precision resistor load bank (-12V and +5VSB)
• Extech MultiMaster MM570 digital multimeter (Accuracy ±0.02%)
• Extech 380803 Power Analyzer (Accuracy ±0.5% of full scale)
• DS1M12 "StingRay" digital oscilloscope (20M S/s with 12 Bit ADC)
• Powerstat Variable Autotransformer, 1.4 KVA, 0-140 VAC
• Extech Model 407738 digital sound level meter (Accuracy ±1.5 dB)
• Custom PC60 enclosure to simulate real-world operating conditions
 

December 10, 2011 | 02:44 PM - Posted by rrr (not verified)

I question OCZ's inclusion of ZS as "mainstream performance" when ModXStream Pro is pegged as "high performance". This is better PSU than ModXStream Pro sans modularity.

June 22, 2012 | 08:18 AM - Posted by Ykai (not verified)

I got this PSU in my game system, it actually holds up Very well, got a i7 2600, 8GB ram and a HD 7850, standard mid end atx mobo, one HDD and 2 DVD players.. the psu never gets loud, never gets really warm and actually i just never have problems with it, so i have a question, is it even worth bothering for higher end psu's with just normal gaming systems?

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